Remove AuthorityMonitor tracking update

The tracking update allows to avoid reloading an authority if no changes
have been done to the record. To verify the changes it is used the
LDAP attribute `entryUSN` which is updated by DS server on any change.

The tracker update mechanism has a race condition when an entry is
modified by the `CAEngine`. When the method `modifyAuthorityEntry()` is
invoked, this will update the tracker and no CA are reloaded by the
`AuthorityMonitor` thread because the tracker is already to the newest
value. However, in case of CA clones, when a sub CA is created in the
primary CA, the clone will get the record but there is no serial.
The CA is registered and when the related keys are retrieved the
record is update with the serial. The update is done by the
`modifyAuthorityEntry()` which will update the trackers. As a result the
`AuthorityMonitor` will not update the CA object and when used
it will miss the serial so some operations will fails.

Since, the `trackerUpdate` method has not other impact has been removed so all
trackers are managed by the `AuthorityMonitor`.

Fix #4669

base/ca/src/main/java/com/netscape/ca/AuthorityMonitor.java

@@ -378,28 +378,6 @@ public void removeCA(AuthorityID aid) {
         nsUniqueIds.remove(aid);
     }
 
-    public synchronized void trackUpdate(AuthorityID aid, LDAPControl[] responseControls) {
-
-        LDAPPostReadControl control = (LDAPPostReadControl)
-            LDAPUtil.getControl(LDAPPostReadControl.class, responseControls);
-
-        LDAPEntry entry = control.getEntry();
-
-        LDAPAttribute attr = entry.getAttribute("entryUSN");
-        if (attr != null) {
-            BigInteger entryUSN = new BigInteger(attr.getStringValueArray()[0]);
-            logger.debug("AuthorityMonitor: tracking entryUSN: " + entryUSN);
-            entryUSNs.put(aid, entryUSN);
-        }
-
-        attr = entry.getAttribute("nsUniqueId");
-        if (attr != null) {
-            String nsUniqueId = attr.getStringValueArray()[0];
-            logger.info("AuthorityMonitor: tracking nsUniqueId: " + nsUniqueId);
-            nsUniqueIds.put(aid, nsUniqueId);
-        }
-    }
-
     /**
      * Stop the activityMonitor thread
      *

base/ca/src/main/java/org/dogtagpki/server/ca/CAEngine.java

@@ -1723,8 +1723,6 @@ public synchronized void addAuthorityRecord(AuthorityRecord record) throws Excep
         } finally {
             connectionFactory.returnConn(conn);
         }
-
-        authorityMonitor.trackUpdate(authorityID, responseControls);
     }
 
     public synchronized void modifyAuthorityEntry(AuthorityID aid, LDAPModificationSet mods) throws EBaseException {
@@ -1743,8 +1741,6 @@ public synchronized void modifyAuthorityEntry(AuthorityID aid, LDAPModificationS
         } finally {
             connectionFactory.returnConn(conn);
         }
-
-        authorityMonitor.trackUpdate(aid, responseControls);
     }
 
     public synchronized void deleteAuthorityEntry(AuthorityID aid) throws EBaseException {